I was proud of Catherine today. She and Eliza just got flu shots, and we were watching Sid the Science Kid on vaccines and how germs get passed along. She asked me about how we get sick from germs, and I described the usual ways. Later in the day she asked, "So, who was the first person to get sick?" What an awesome demonstration of thinking something through!
I tried to explain from an evolutionary standpoint, which is a little complex for her to digest at this point. But the important thing is she was praised for thinking of a great question, and reassured that I would at least try to explain answers to her.